Following the aside ... requiring parentheses around tuples is generally best for readability. I can only think of two cases that are more readable without them

Following the aside ... requiring parentheses around tuples is generally best for readability. I can only think of two cases that are more readable without them: (x, y) = (y, x) some_array[(x, y)] Languages generally already special-case both the LHS of assignments and the inside of indexing brackets, and special-casing the RHS of assignments seems like a reasonable extension.